CN103913746B - A kind of boats and ships drinking water automobile overweight detecting system and detection method thereof - Google Patents
A kind of boats and ships drinking water automobile overweight detecting system and detection method thereof Download PDFInfo
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- CN103913746B CN103913746B CN201410171888.5A CN201410171888A CN103913746B CN 103913746 B CN103913746 B CN 103913746B CN 201410171888 A CN201410171888 A CN 201410171888A CN 103913746 B CN103913746 B CN 103913746B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/12—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude for indicating draught or load
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Abstract
The present invention discloses a kind of boats and ships drinking water automobile overweight detecting system and detection method thereof, and described system comprises synchronizing signal generation module, ultrasonic emitting module, ultrasonic wave receiver module, range finder module, data processing module and display alarm module; Ultrasonic emitting module is fixedly mounted on the side in navigation channel; Ultrasonic wave receiver module is arranged on another side relative with ultrasonic emitting module, navigation channel; The point distance measurement of range finder module and the ultrasonic wave of ultrasonic emitting module send and are a little positioned on same vertical line. The present invention can send ultrasonic wave in boats and ships side, and ultrasonic wave is received by another side, is therefore the boats and ships drinking water automobile overweight detecting system of a kind of side sweeping type. Because in both sides, navigation channel, so being easy to install, ship navigation can not be affected, it may also be useful to scope is more extensive. The present invention is by judging, to the time of lag of the signal that ultrasonic wave receiver array receives and intensity, the situation of blocking, it is possible to eliminate sound wave multi-path effect to the impact of measuring result so that measuring result is more accurate.
Description
Technical field
The present invention relates to underwater ultrasound ripple Detection Techniques, boats and ships drinking water overrun testing technology, particularly a kind of boats and ships drinking water automobile overweight detecting system and detection method thereof.
Background technology
Along with Yangtze River shipping amount constantly increases, in navigation channel, boats and ships quantity and density all significantly improve, the boats and ships drinking water threat to shipping safety of transfiniting is day by day serious, and especially in the ship-lifter in the Yangtze River Gorges, the boats and ships that drinking water is transfinited are extremely easily to rising cabin and infringement is caused in navigation channel. Current boats and ships drinking water overrun testing means mainly contain following several:
One, detect manually;
Two, based on the boats and ships water gauge Recognition of Reading technology of image processing techniques;
Three, laser water level method of masurement;
Four, ultrasonic array method.
In aforesaid method, method one due to the subjectivity accounting example of people too big, and Measuring Time is also longer, have impact on the shipping efficiency in navigation channel; Method two too relies on the water gauge accuracy of boats and ships self, it may also be useful to property is limited; Method three due to laser cannot long range propagation in water, it may also be useful to scope is limited to some extent; Method four installs, it is loaded down with trivial details to overhaul, and affects shipping efficiency. Therefore also do not have a kind of method fast can measure boats and ships accurately at present and absorb water the method transfinited.
Summary of the invention
For solving the problems referred to above that prior art exists, the present invention to be designed that a kind of use range is wide, measuring result accurately, be easy to installation, maintenance boats and ships drinking water automobile overweight detecting system and detection method thereof easily.
In order to realize above-mentioned purpose, the technical scheme of the present invention is as follows: a kind of boats and ships drinking water automobile overweight detecting system, comprises synchronizing signal generation module, ultrasonic emitting module, ultrasonic wave receiver module, range finder module, data processing module and display alarm module;
Described synchronizing signal generation module adopts to be built hardware circuit or utilizes the mode of GPS synchronous clock to launch synchronizing signal to ultrasonic emitting module, ultrasonic wave receiver module and range finder module simultaneously, and these three modules are started working simultaneously;
Described ultrasonic emitting module comprises synchronous signal receiver device, ultrasonic transmitter, angle measurement equipment and support; Described synchronous signal receiver device is used for receiving synchronizing signal; Ultrasonic transmitter sends the ultrasonic pulse that the time length of Small angle is �� t; Angle measurement equipment measures ultrasonic transmitter the ultrasonic wave medullary ray sent and the offset �� absorbing water barrier line, for the correction of last measuring result; Support is used for being fixedly mounted on ultrasonic emitting module the side in navigation channel; The boats and ships drinking water barrier line of the ultrasonic wave medullary ray that ultrasonic transmitter sends and regulation overlaps or close;
Described ultrasonic wave receiver module comprises linear array-type ultrasonic receiver module or non-linear array formula ultrasonic wave receiver module; Described linear array-type ultrasonic receiver module comprises synchronous signal receiver device, linear ultrasound receiver array, data transmission device and support; Synchronous signal receiver device receives synchronizing signal; Ultrasonic wave receiver array receives not to be obscured by an obstacle propagates the ultrasonic wave of coming; The measuring result of ultrasonic wave receiver array is transferred to data processing module by data transmission device; This module is fixedly mounted on another side relative with ultrasonic emitting module, navigation channel by support; Vertically and its central point is positioned at or absorbs water barrier line close to boats and ships in linear ultrasound receiver array direction; Described non-linear array formula ultrasonic wave receiver module comprises synchronous signal receiver device, buoyancy tank, ultrasonic wave receiver array, DGPS locating device and data transmission device; Synchronous signal receiver device receives synchronizing signal; Buoyancy tank is used for fixing installs ultrasonic wave receiver array so that it is can keep static state in water; The array surface of ultrasonic wave receiver array is greater than launches the effective rounded face of ultrasonic wave of coming; DGPS locating device is monitored and is located the position coordinate of buoyancy tank, and whether monitoring buoyancy tank deviates from and effectively receive position; The measuring result of ultrasonic wave receiver array is transferred to data processing module by data transmission device; Described DGPS locating device is the abbreviation of differential GPS locating device;
Described range finder module comprises synchronous signal receiver device, range unit and data transmission device; The point distance measurement of range finder module and the ultrasonic wave of ultrasonic emitting module send and are a little positioned on same vertical line.
A detection method for boats and ships drinking water automobile overweight detecting system, comprises the following steps:
A, synchronizing signal generation module send synchronizing signal
Hardware circuit is built in the employing of synchronizing signal generation module or GPS synchronous clock sends synchronizing signal, ensures that ultrasonic emitting module, ultrasonic wave receiver module and range finder module are started working simultaneously, records the desired data in boats and ships same moment;
B, ultrasonic emitting module send ultrasonic wave
Ultrasonic emitting module is arranged on side, navigation channel, and it absorbs water the ultrasonic pulse sending Small angle centered by barrier line by boats and ships; This ultrasonic pulse is fixed frequency, is convenient to and the differentiation of other sound wave in water; When ultrasonic wave is not blocked in transmission way, complete being received by ultrasonic wave receiver module of meeting; When midway is blocked by boats and ships, the ultrasonic wave signal that ultrasonic wave receiver module receives can change;
C, ultrasonic wave receiver module receive ultrasonic wave
Ultrasonic wave receiver module, according to the difference of measurement environment, works respectively in the following ways: when navigation channel two, lateral extent is short, the depth of water and water quality clear, go to step C1 when the multi-path effect of sound wave is not obvious; Otherwise, go to step C2;
C1, when navigation channel two, lateral extent is short, the depth of water and water quality clear, when the multi-path effect of sound wave is not obvious, ultrasonic wave receiver module adopts linear array-type ultrasonic receiver module, before whether measurement boats and ships drinking water transfinites, accurately measure the linear ultrasound receiver array when not having obstacle in advance and can receive the length M of hyperacoustic useful range, go to step D;
C2, when at two sides, navigation channel distance, water is shallow and water turbidity, and in the obvious environment of the multi-path effect of sound wave, ultrasonic wave receiver module is serious by external interference, adopts non-linear array formula ultrasonic wave receiver module; Ultrasonic emitting module and ultrasonic wave receiver module are started working simultaneously, the ultrasonic wave elapsed time t come along most short lines propagated starts to be received by ultrasonic wave receiver array, and reflect along path at random, reflect the ultrasonic wave come owing to path length, direction are spuious, the reason of power dissipation because of multi-path effect, the time arriving ultrasonic wave receiver array is greater than t, and the intensity of waveform is weak, so the effective ultrasonic pulse received should in time t��t+ �� t interval, and its strength of signal is much larger than interference signal intensity; Therefore determine the useful range of Received signal strength from hyperacoustic time of lag that ultrasonic wave receiver array receives and waveform intensity accurately, thus eliminate the impact of multi-path effect on measuring result of sound wave; Before whether measurement boats and ships drinking water transfinites, accurately measure the diameter length M that the ultrasonic wave receiver array when not having obstacle can receive hyperacoustic effective round scope in advance;
D, range finder module are found range
Range finder module is started working after receiving synchronizing signal, records the distance L of point distance measurement to hull1, then measured result is transferred to data processing module by data transmission device;
E, data processing module carry out data processing
If it is L that data processing module obtains hull half-width from the VTS information of boats and ships or AIS information2, receiving ultrasonic emitting module to the distance of hull from range finder module is L1, then ultrasonic emitting module is to the horizontal throw L at bottom of ship center3=L1+L2, after ultrasonic emitting module is started working, the ultrasonic wave elapsed time T come along most short lines propagated starts to be received by ultrasonic wave receiver array, and reflect along path at random because of multi-path effect, reflection come ultrasonic wave due to path long, the reason of power dissipation, the time arriving ultrasonic wave receiver array is greater than T, and the intensity of waveform is weak, therefore the useful range of Received signal strength can be determined accurately from hyperacoustic time of lag that ultrasonic wave receiver array receives and waveform intensity, thus eliminate the impact of multi-path effect on measuring result of sound wave, if it is D that ultrasonic wave receiver array receives effective signal area length1, the ultrasonic wave medullary ray of transmitting is �� with drinking water barrier line offset; Before driving into surveyed area without boats and ships, measure the fully effective length M that ultrasonic wave receiver array receives ultrasonic wave range in advance;
If ultrasonic emitting module is a; When there being boats and ships to stop ultrasonic propagation, the effectively upper point of accumulation of ultrasonic wave receiver array Received signal strength scope is b; The intersection point launching hyperacoustic medullary ray and ultrasonic wave receiver array is c; The intersection point of drinking water barrier line and ultrasonic wave receptor is d; Hull bottom point is e; Boats and ships medullary ray is f with drinking water barrier line intersection point; Hull bottom is H to the distance of drinking water barrier line; Horizontal throw L between ultrasonic emitting module and ultrasonic wave receiver array4For known; Length D between b, c 22=D1-M/2; Length L between a, f 23=L1+L2; Distance D between c, d 23=L4�� tan ��; First according to D1Judge with the relation of M, if D1=M, then turn E1; If D1�� (M/2-D3), then turn E2; If (M/2-D3)��D1< M, then turn E3;
E1, boats and ships to be measured cross and do not produce to hinder to hyperacoustic propagation when measuring district, illustrate that shipping draft is more shallow than barrier line, it is possible to safety navigation; Turn F;
E2, boats and ships to be measured cross and produce to hinder to hyperacoustic propagation when measuring district, and the hull bottom drinking water degree of depth has exceeded barrier line; Turn F;
E3, boats and ships to be measured cross and produce to hinder to hyperacoustic propagation when measuring district, but the hull bottom drinking water degree of depth does not exceed barrier line, and warning degree is carried out further judgement; In �� abc and �� aef, two groups of tangent ratios corresponding to �� a are equal, so having:
Namely the distance of shipping draft and barrier line is released:
The drinking water degree of depth alert level of boats and ships is carried out classification by the size according to H, obtains final measuring result;
F, display alarm module carry out display alarm
Display alarm module carries out showing or reporting to the police according to the measuring result of data processing module.
Compared with prior art, the advantage of the present invention is as follows:
1, the ultrasonic emitting module in the present invention and ultrasonic wave receiver module are arranged on the both sides in navigation channel respectively, it is possible to send ultrasonic wave in boats and ships side, and ultrasonic wave is received by another side, are therefore the boats and ships drinking water automobile overweight detecting systems of a kind of side sweeping type. Because in both sides, navigation channel, so being easy to install, ship navigation can not be affected, it may also be useful to scope is more extensive.
2, the present invention is by judging, to the time of lag of the signal that ultrasonic wave receiver array receives and intensity, the situation of blocking, it is possible to eliminate sound wave multi-path effect to the impact of measuring result so that measuring result is more accurate.
3, the ultrasonic wave reception array of the present invention can adopt buoyancy tank to install according to the needs of environment, makes installation position have handiness, and maintenance of equipment is convenient.
4, the present invention can measure whether boats and ships drinking water transfinites, and the distance of hull bottom and barrier line can be measured when shipping draft is near barrier line, therefore when multiple ultrasonic emitting block combiner and multiple ultrasonic wave receiver module combination correspondence are installed, the multiple side sweeping type ultrasonic transmission device combination of the concrete drinking water degree of depth that may be used for measuring boats and ships gets up to form boats and ships drinking water detection system, it is possible to measure the concrete drinking water degree of depth of boats and ships.
Accompanying drawing explanation
The present invention has accompanying drawing 10 width, wherein:
Fig. 1 is side sweeping type boats and ships drinking water automobile overweight detecting system workflow diagrams.
Fig. 2 is that ultrasonic emitting module installs angle schematic diagram.
Fig. 3 is that ultrasonic wave receiver module installs angle schematic diagram.
Fig. 4 is nonlinear ultrasonic receiver array schematic diagram.
Fig. 5 is that the impact of sound wave multi-path effect receives waveform diagram.
Fig. 6 is that shipping draft is away from barrier line schematic diagram.
Fig. 7 is that shipping draft is close to barrier line schematic diagram.
Fig. 8 is that shipping draft exceedes barrier line schematic diagram.
Fig. 9 is ultrasonic emitting block combiner schematic diagram.
Figure 10 is ultrasonic wave receiver module combination schematic diagram.
In figure: 1, synchronizing signal generation module, 2, ultrasonic emitting module, 3, ultrasonic wave receiver module, 4, range finder module, 5, data processing module, 6, display alarm module, 7, boats and ships drinking water barrier line, 8, linear ultrasound receiver array, 9, buoyancy tank, 10, ultrasonic wave receiver array, 11, the effective rounded face of ultrasonic wave, 12, boats and ships to be measured, 13, ultrasonic emitting block combiner, 14, ultrasonic wave receiver module combination, 15, ultrasonic emitting medullary ray.
Embodiment
As shown in Figure 1, the present invention is side sweeping type boats and ships drinking water automobile overweight detecting systems, forms primarily of synchronizing signal generation module 1, ultrasonic emitting module 2, ultrasonic wave receiver module 3, range finder module 4, data processing module 5 and display alarm module 6.
Described synchronizing signal generation module 1 adopts to be built hardware circuit or utilizes the mode of GPS synchronous clock to launch synchronizing signal to ultrasonic emitting module 2, ultrasonic wave receiver module 3 and range finder module 4 simultaneously, and these three modules are started working simultaneously;
Described ultrasonic emitting module 2 comprises synchronous signal receiver device, ultrasonic transmitter, angle measurement equipment and support; Described synchronous signal receiver device is used for receiving synchronizing signal; Ultrasonic transmitter sends the ultrasonic pulse that the time length of Small angle is �� t; Angle measurement equipment measures ultrasonic transmitter the ultrasonic emitting medullary ray 15 sent and the offset �� absorbing water barrier line, for the correction of last measuring result; Support is used for being fixedly mounted on ultrasonic emitting module 2 side in navigation channel; As shown in Figure 2, the ultrasonic emitting medullary ray 15 that ultrasonic transmitter sends overlaps or close with the boats and ships drinking water barrier line 7 of regulation;
Described ultrasonic wave receiver module 3 comprises linear array-type ultrasonic receiver module 3 or non-linear array formula ultrasonic wave receiver module 3; Described linear array-type ultrasonic receiver module 3 comprises synchronous signal receiver device, linear ultrasound receiver array 8, data transmission device and support; Synchronous signal receiver device receives synchronizing signal; Ultrasonic wave receiver array 10 receives not to be obscured by an obstacle propagates the ultrasonic wave of coming; The measuring result of ultrasonic wave receiver array 10 is transferred to data processing module 5 by data transmission device; This module is fixedly mounted on another side relative with ultrasonic emitting module 2, navigation channel by support; As shown in Figure 3, vertically and its central point is positioned at or absorbs water barrier line 7 close to boats and ships in linear ultrasound receiver array 8 direction. Described non-linear array formula ultrasonic wave receiver module 3 comprises synchronous signal receiver device, buoyancy tank 9, ultrasonic wave receiver array 10, DGPS locating device and data transmission device; Synchronous signal receiver device receives synchronizing signal; Buoyancy tank 9 is used for fixing installs ultrasonic wave receiver array 10 so that it is can keep static state in water; As shown in Figure 4, the array surface of ultrasonic wave receiver array 10 is greater than the effective rounded face 11 of ultrasonic wave that transmitting comes; DGPS locating device is monitored and is located the position coordinate of buoyancy tank 9, and whether monitoring buoyancy tank 9 deviates from and effectively receive position; The measuring result of ultrasonic wave receiver array 10 is transferred to data processing module 5 by data transmission device;
Described range finder module 4 comprises synchronous signal receiver device, range unit and data transmission device; As shown in Figure 2, the point distance measurement of range finder module 4 and the ultrasonic wave of ultrasonic emitting module 2 send and are a little positioned on same vertical line.
A detection method for boats and ships drinking water automobile overweight detecting system, comprises the following steps:
A, synchronizing signal generation module 1 send synchronizing signal
Hardware circuit is built in synchronizing signal generation module 1 employing or GPS synchronous clock sends synchronizing signal, ensures that ultrasonic emitting module 2, ultrasonic wave receiver module 3 and range finder module 4 are started working simultaneously, records the desired data in boats and ships same moment;
B, ultrasonic emitting module 2 send ultrasonic wave
Ultrasonic emitting module 2 is arranged on side, navigation channel, and it absorbs water the ultrasonic pulse sending Small angle centered by barrier line 7 by boats and ships; This ultrasonic pulse is fixed frequency, is convenient to and the differentiation of other sound wave in water; When ultrasonic wave is not blocked in transmission way, complete being received by ultrasonic wave receiver module 3 of meeting; When midway is blocked by boats and ships, the ultrasonic wave signal that ultrasonic wave receiver module 3 receives can change;
C, ultrasonic wave receiver module 3 receive ultrasonic wave
Ultrasonic wave receiver module 3, according to the difference of measurement environment, works respectively in the following ways: when navigation channel two, lateral extent is short, the depth of water and water quality clear, go to step C1 when the multi-path effect of sound wave is not obvious; Otherwise, go to step C2;
C1, when navigation channel two, lateral extent is short, the depth of water and water quality clear, when the multi-path effect of sound wave is not obvious, ultrasonic wave receiver module 3 adopts linear array-type ultrasonic receiver module 3, before whether measurement boats and ships drinking water transfinites, accurately measure the linear ultrasound receiver array 8 when not having obstacle in advance and can receive the length M of hyperacoustic useful range, go to step D;
C2, when at two sides, navigation channel distance, water is shallow and water turbidity, and in the obvious environment of the multi-path effect of sound wave, ultrasonic wave receiver module 3 is serious by external interference, adopts non-linear array formula ultrasonic wave receiver module 3; Ultrasonic emitting module 2 and ultrasonic wave receiver module 3 are started working simultaneously, as shown in Figure 5, the ultrasonic wave elapsed time t come along most short lines propagated starts to be received by ultrasonic wave receiver array 10, and reflect along path at random, reflect the ultrasonic wave come owing to path length, direction are spuious, the reason of power dissipation because of multi-path effect, the time arriving ultrasonic wave receiver array 10 is greater than t, and the intensity of waveform is weak, so the effective ultrasonic pulse received should in time t��t+ �� t interval, and its strength of signal is much larger than interference signal intensity; Therefore determine the useful range of Received signal strength from hyperacoustic time of lag that ultrasonic wave receiver array 10 receives and waveform intensity accurately, thus eliminate the impact of multi-path effect on measuring result of sound wave; Before whether measurement boats and ships drinking water transfinites, accurately measure the diameter length M that the ultrasonic wave receiver array 10 when not having obstacle can receive hyperacoustic effective round scope in advance;
D, range finder module 4 are found range
Range finder module 4 is started working after receiving synchronizing signal, records the distance L of point distance measurement to hull1, then measured result is transferred to data processing module 5 by data transmission device;
E, data processing module 5 carry out data processing
If it is L that data processing module 5 obtains hull half-width from the VTS information of boats and ships or AIS information2, receiving ultrasonic emitting module 2 to the distance of hull from range finder module 4 is L1, then ultrasonic emitting module 2 is to the horizontal throw L at bottom of ship center3=L1+L2, after ultrasonic emitting module 2 is started working, the ultrasonic wave elapsed time T come along most short lines propagated starts to be received by ultrasonic wave receiver array 10, and reflect along path at random because of multi-path effect, reflection come ultrasonic wave due to path long, the reason of power dissipation, the time arriving ultrasonic wave receiver array 10 is greater than T, and the intensity of waveform is weak, therefore the useful range of Received signal strength can be determined accurately from hyperacoustic time of lag that ultrasonic wave receiver array 10 receives and waveform intensity, thus eliminate the impact of multi-path effect on measuring result of sound wave, if it is D that ultrasonic wave receiver array 10 receives effective signal area length1, the ultrasonic emitting medullary ray 15 of transmitting is �� with drinking water barrier line offset; Before driving into surveyed area without boats and ships, measure the fully effective length M that ultrasonic wave receiver array 10 receives ultrasonic wave range in advance;
If ultrasonic emitting module 2 is a; When there being boats and ships to stop ultrasonic propagation, the effectively upper point of accumulation of ultrasonic wave receiver array 10 Received signal strength scope is b; The intersection point launching hyperacoustic medullary ray and ultrasonic wave receiver array 10 is c; The intersection point of drinking water barrier line and ultrasonic wave receptor is d; Hull bottom point is e; Boats and ships medullary ray is f with drinking water barrier line intersection point; Hull bottom is H to the distance of drinking water barrier line; Horizontal throw L between ultrasonic emitting module 2 and ultrasonic wave receiver array 104For known; Length D between b, c 22=(D1-M/2); Length L between a, f 23=L1+L2; Distance D between c, d 23=L4�� tan ��; First according to D1Judge with the relation of M, if D1=M, then turn E1; If D1�� (M/2-D3), then turn E2; If (M/2-D3)��D1< M, then turn E3;
E1, as shown in Figure 6, boats and ships 12 to be measured cross and do not produce to hinder to hyperacoustic propagations when measuring district, illustrate that shipping draft is more shallow than barrier line, it is possible to open the navigation or air flight safely; Turn F;
E2, as shown in Figure 7, boats and ships 12 to be measured cross and produce to hinder to hyperacoustic propagations when measuring district, and hull bottom absorbs water the degree of depth has exceeded barrier line; Turn F;
E3, as shown in Figure 8, boats and ships 12 to be measured cross and produce to hinder to hyperacoustic propagations when measuring district, but hull bottom absorbs water the degree of depth does not exceed barrier line, and warning degree is carried out further judgement; In �� abc and �� aef, two groups of tangent ratios corresponding to �� a are equal, so having:
Namely the distance of shipping draft and barrier line is released:
The drinking water degree of depth alert level of boats and ships is carried out classification by the size according to H, obtains final measuring result;
According to the above, the present invention can measure whether boats and ships drinking water transfinites, and the distance H with barrier line can be measured when shipping draft is near barrier line, therefore when multiple ultrasonic emitting block combiner 13 (such as Fig. 9) and multiple ultrasonic wave receiver module combination 14 (such as Figure 10) correspondence are installed, it is possible to for measuring the concrete drinking water degree of depth of boats and ships.
F, display alarm module 6 carry out display alarm
Display alarm module 6 carries out showing or reporting to the police according to the measuring result of data processing module 5.
Claims (2)
1. a boats and ships drinking water automobile overweight detecting system, it is characterised in that: comprise synchronizing signal generation module (1), ultrasonic emitting module (2), ultrasonic wave receiver module (3), range finder module (4), data processing module (5) and display alarm module (6);
Described synchronizing signal generation module (1) adopts to be built hardware circuit or utilizes the mode of GPS synchronous clock to launch synchronizing signal to ultrasonic emitting module (2), ultrasonic wave receiver module (3) and range finder module (4) simultaneously, and these three modules are started working simultaneously;
Described ultrasonic emitting module (2) comprises synchronous signal receiver device, ultrasonic transmitter, angle measurement equipment and support; Described synchronous signal receiver device is used for receiving synchronizing signal; Ultrasonic transmitter sends the ultrasonic pulse that the time length of Small angle is �� t; Angle measurement equipment measures ultrasonic transmitter the ultrasonic emitting medullary ray (15) sent and the offset �� absorbing water barrier line, for the correction of last measuring result; Support is used for being fixedly mounted on ultrasonic emitting module (2) side in navigation channel; The ultrasonic emitting medullary ray (15) that ultrasonic transmitter sends overlaps or close with boats and ships drinking water barrier line (7) of regulation;
Described ultrasonic wave receiver module (3) comprises linear array-type ultrasonic receiver module (3) or non-linear array formula ultrasonic wave receiver module (3); Described linear array-type ultrasonic receiver module (3) comprises synchronous signal receiver device, linear ultrasound receiver array (8), data transmission device and support; Synchronous signal receiver device receives synchronizing signal; Ultrasonic wave receiver array (10) receives not to be obscured by an obstacle propagates the ultrasonic wave of coming; The measuring result of ultrasonic wave receiver array (10) is transferred to data processing module (5) by data transmission device; This module is fixedly mounted on another side relative with ultrasonic emitting module (2), navigation channel by support; Vertically and its central point is positioned at or absorbs water barrier line (7) close to boats and ships in linear ultrasound receiver array (8) direction; Described non-linear array formula ultrasonic wave receiver module (3) comprises synchronous signal receiver device, buoyancy tank (9), ultrasonic wave receiver array (10), DGPS locating device and data transmission device; Synchronous signal receiver device receives synchronizing signal; Buoyancy tank (9) is used for fixing installs ultrasonic wave receiver array (10) so that it is can keep static state in water; The array surface of ultrasonic wave receiver array (10) is greater than launches the effective rounded face of the ultrasonic wave (11) of coming; DGPS locating device is monitored and is located the position coordinate of buoyancy tank (9), and whether monitoring buoyancy tank (9) deviates from and effectively receive position; The measuring result of ultrasonic wave receiver array (10) is transferred to data processing module (5) by data transmission device; Described DGPS locating device is the abbreviation of differential GPS locating device;
Described range finder module (4) comprises synchronous signal receiver device, range unit and data transmission device; The point distance measurement of range finder module (4) and the ultrasonic wave of ultrasonic emitting module (2) send and are a little positioned on same vertical line.
2. the detection method of a boats and ships drinking water automobile overweight detecting system, it is characterised in that: comprise the following steps:
A, synchronizing signal generation module (1) send synchronizing signal
Hardware circuit is built in synchronizing signal generation module (1) employing or GPS synchronous clock sends synchronizing signal, ensure that ultrasonic emitting module (2), ultrasonic wave receiver module (3) and range finder module (4) are started working simultaneously, record the desired data in boats and ships same moment;
B, ultrasonic emitting module (2) send ultrasonic wave
Ultrasonic emitting module (2) is arranged on side, navigation channel, and it absorbs water the ultrasonic pulse sending Small angle centered by barrier line (7) by boats and ships; This ultrasonic pulse is fixed frequency, is convenient to and the differentiation of other sound wave in water; When ultrasonic wave is not blocked in transmission way, complete being received by ultrasonic wave receiver module (3) of meeting; When midway is blocked by boats and ships, the ultrasonic wave signal that ultrasonic wave receiver module (3) receives can change;
C, ultrasonic wave receiver module (3) receive ultrasonic wave
Ultrasonic wave receiver module (3), according to the difference of measurement environment, works respectively in the following ways: when navigation channel two, lateral extent is short, the depth of water and water quality clear, go to step C1 when the multi-path effect of sound wave is not obvious; Otherwise, go to step C2;
C1, when navigation channel two, lateral extent is short, the depth of water and water quality clear, when the multi-path effect of sound wave is not obvious, ultrasonic wave receiver module (3) adopts linear array-type ultrasonic receiver module (3), before whether measurement boats and ships drinking water transfinites, accurately measure the linear ultrasound receiver array (8) when not having obstacle in advance and can receive the length M of hyperacoustic useful range, go to step D;
C2, when at two sides, navigation channel distance, water is shallow and water turbidity, and in the obvious environment of the multi-path effect of sound wave, ultrasonic wave receiver module (3) is serious by external interference, adopts non-linear array formula ultrasonic wave receiver module (3), ultrasonic emitting module (2) and ultrasonic wave receiver module (3) are started working simultaneously, the ultrasonic wave elapsed time t come along most short lines propagated starts to be received by ultrasonic wave receiver array (10), and reflect along path at random because of multi-path effect, reflection come ultrasonic wave due to path long, direction is spuious, the reason of power dissipation, the time arriving ultrasonic wave receiver array (10) is greater than t, and the intensity of waveform is weak, so the effective ultrasonic pulse received should in time t��t+ �� t interval, and its strength of signal is much larger than interference signal intensity, therefore determine the useful range of Received signal strength from hyperacoustic time of lag that ultrasonic wave receiver array (10) receives and waveform intensity accurately, thus eliminate the impact of multi-path effect on measuring result of sound wave, before whether measurement boats and ships drinking water transfinites, accurately measure the diameter length M that the ultrasonic wave receiver array (10) when not having obstacle can receive hyperacoustic effective round scope in advance,
D, range finder module (4) are found range
Range finder module (4) is started working after receiving synchronizing signal, records the distance L of point distance measurement to hull1, then measured result is transferred to data processing module (5) by data transmission device;
E, data processing module (5) carry out data processing
If it is L that data processing module (5) obtains hull half-width from the VTS information of boats and ships or AIS information2, receiving ultrasonic emitting module (2) to the distance of hull from range finder module (4) is L1, then ultrasonic emitting module (2) is to the horizontal throw L at bottom of ship center3=L1+L2, after ultrasonic emitting module (2) is started working, the ultrasonic wave elapsed time T come along most short lines propagated starts to be received by ultrasonic wave receiver array (10), and reflect along path at random because of multi-path effect, reflection come ultrasonic wave due to path long, the reason of power dissipation, the time arriving ultrasonic wave receiver array (10) is greater than T, and the intensity of waveform is weak, therefore the useful range of Received signal strength can be determined accurately from hyperacoustic time of lag that ultrasonic wave receiver array (10) receives and waveform intensity, thus eliminate the impact of multi-path effect on measuring result of sound wave, if it is D that ultrasonic wave receiver array (10) receives effective signal area length1, the ultrasonic emitting medullary ray (15) of transmitting is �� with drinking water barrier line offset; Before driving into surveyed area without boats and ships, measure the fully effective length M that ultrasonic wave receiver array (10) receives ultrasonic wave range in advance;
If ultrasonic emitting module (2) is a; When there being boats and ships to stop ultrasonic propagation, the effectively upper point of accumulation of ultrasonic wave receiver array (10) Received signal strength scope is b; The intersection point launching hyperacoustic medullary ray and ultrasonic wave receiver array (10) is c; The intersection point of drinking water barrier line and ultrasonic wave receptor is d; Hull bottom point is e; Boats and ships medullary ray is f with drinking water barrier line intersection point; Hull bottom is H to the distance of drinking water barrier line; Horizontal throw L between ultrasonic emitting module (2) and ultrasonic wave receiver array (10)4For known; Length D between b, c 22=D1-M/2; Length L between a, f 23=L1+L2; Distance D between c, d 23=L4�� tan ��; First according to D1Judge with the relation of M, if D1=M, then turn E1; If D1�� (M/2-D3), then turn E2; If (M/2-D3)��D1< M, then turn E3;
E1, boats and ships to be measured (12) cross and do not produce to hinder to hyperacoustic propagation when measuring district, illustrate that shipping draft is more shallow than barrier line, it is possible to safety navigation; Turn F;
E2, boats and ships to be measured (12) cross and produce to hinder to hyperacoustic propagation when measuring district, and the hull bottom drinking water degree of depth has exceeded barrier line; Turn F;
E3, boats and ships to be measured (12) cross and produce to hinder to hyperacoustic propagation when measuring district, but the hull bottom drinking water degree of depth does not exceed barrier line, and warning degree is carried out further judgement; In �� abc and �� aef, two groups of tangent ratios corresponding to �� a are equal, so having:
Namely the distance of shipping draft and barrier line is released:
The drinking water degree of depth alert level of boats and ships is carried out classification by the size according to H, obtains final measuring result;
F, display alarm module (6) carry out display alarm
Display alarm module (6) carries out showing or reporting to the police according to the measuring result of data processing module (5).
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| CN104590502B (en) * | 2014-12-31 | 2017-01-04 | 大连海事大学 | A kind of side sweeping type drauht detecting system and detection method thereof |
| CN104515994B (en) * | 2014-12-31 | 2017-01-25 | 大连海事大学 | Side-scanning ship draught overloading detection system and operation method thereof |
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